The document discusses the Semantic Web, which aims to extend the current web by giving information well-defined meaning so that computers and people can better cooperate. It was proposed by Tim Berners-Lee as a way to make data on the web more machine-readable. Key components that enable the Semantic Web include RDF, OWL, SPARQL, and linked data. RDF in particular allows structured descriptions of resources through subject-predicate-object triples that can be connected to form graphs. This allows semantic content to be included in web pages and facilitates searching and sharing of information across the web.

1. Semantic Web
Abid Fakhre Alam
PGDLIM, SLIS
CUG
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2. Introduction
• Semantic web itself implies the meaning and
understanding.
• It enable the data to be linked from one source of
information to other source of Information that can
understand by the computers to processed the
information easily.
• In 1989, Tim Berners-Lee invented the World Wide
Web. To This it emerged the New Concept “Semantic
Web”. The Extension of WWW.
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3. Cont..
• Tim Berners-Lee is the person behind Semantic
Web.
• According to him on Semantic web is the
“Semantic” Indicate the Machine-Processable
with the data to make Understandable and
“Web” indicate the idea of the navigable space
of the Interconnected the object with mapping
from URIs to the resources
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4. Definition
• Semantic Web is a mesh of data that are associated in
such a way that they can easily be processed by
machines instead of human operators. It represents an
effective means of data representation in the form of a
globally linked database. By supporting the inclusion of
semantic content in Web pages, the Semantic Web
targets the conversion of the presently available Web of
unstructured documents to a Web of information/data --
- Techopedia
• The Semantic Web is an extension of the current web in
which information is given well-defined meaning, better
enabling computers and people to work in cooperation --
- Tim Berner Lee
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5. List of Semantic Standards
• Resource Description Framework (RDF)
• Web Ontology Language (OWL)
• SPARQL
• RDF in Attribute (RDFa)
• JSON-based Serialization for Linked Data (JSON-LD)
• Simple Knowledge Organization System (SKOS)
• RDF Vocabulary Description Language 1.0: RDF
Schema (RDFS)
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6. • Gleaning Resource Descriptions from Dialects of
Languages (GRDDL)
• Protocol for Web Description Resources
(POWDER)
• PROV
• Rule Interchange Format (RIF)
• Semantic Annotations for WSDL and XML
Schema (SAWSDL)
• Relational Databases to RDF (RDB2RDF)
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Cont..

7. RDF
• It stand for Resource Description Framework
• It is use to describe the resources or Information's
present and store on web in Structure format.
• It is also describe the metadata of the web resources.
• It is also used to retrieve the information that cannot
easily retrieve through URIs.
(http://www.foaf.com/Person#AbidFakhreAlam)
• URIs use to Identify the RDF triple.
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8. Element and Notations
• RDF has three basic Element:
• Resources
• Properties
• Classes/Value
• Three equivalent notations:
• RDF Triple
• RDF Graph
• RDF/XML
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9. Element of RDF
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10. RDF Triple
• Subject and Predicate must be a things, concept,
and has a URI and whereas the object can be a
resource or values.
• RDF Triple is the three data entities that codify
the statement in the form of Subject, Predicate
and Object
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11. RDF Graph
• Collection of Triple that consist of the Subject,
Predicate, and Object and form a set of the
Triple, that triple is called as the RDF Graphs.
• To make More logical RDF Graph serilized into
different format Such as RDF/XML, NTriple,
Turtle, N3, etc.
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12. RDF/XML
• It is based on Syntax to represent in RDF into XML.
• For Example:
<rdf:Dercription rdf:about="URI1#NarendraModi">
<rdf:type rdf:resource="URI4Person"/>
<URI2#isPrimeMinisterOf rdf:resource="URI3India“
<rdf:Description>
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13. Benefit and Application of RDF
• To providing Internet Resources metadata.
• It is easier to produce metadata that the software
exploits because of the Standard syntax.
• It also allow to easily exchange information to the
application because of standard syntax.
• To get precise results while searching.
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14. Cont..
• RDF is use in to Describe the property on the
Item in Shopping Mall, to Represent web page
Content , library on the web and so on.
• RDF provides the foundation for publishing and
linking your data.
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15. Conclusion
• The term “Semantic Web” refers to W3C’s vision
of the Web of linked data. Semantic Web
technologies enable people to create data stores
on the Web, build vocabularies, and write rules
for handling data. Linked data are empowered by
technologies such as RDF, SPARQL, OWL, and
SKOS.
• The inclusion of data to RDF files enables
computer programs or Web spiders to search,
discover, collect, assess and process the data on
the Web.
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16. Cont..
• The key goal of the Semantic Web is to trigger
the evolution of the existing Web to enable users
to search, discover, share and join information
with less effort.
• Semantic Web comes under the umbrella of
three things: Automation of information
retrieval, the Internet of Things and Personal
Assistants.
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17. Thank You
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